Mechanical Characterization and Micro-Wear of FeB-Fe₂B Layers on Boriding AISI D2 and AISI 4340 Steels  

作　　者：Suellen Terroso de Mendonça Ferreira André Luiz Klemes Bacco Eduardo Mauro do Nascimento Carlos Maurício Lepienski Suellen Terroso de Mendonça Ferreira;André Luiz Klemes Bacco;Eduardo Mauro do Nascimento;Carlos Maurício Lepienski(Programa de Pós Graduação em Engenharia e Materiais (PPGEM), Universidade Tecnológica Federal do Paraná (UTFPR), Curitiba, Brasil)

机构地区：[1]Programa de Pós Graduaç ã o em Engenharia e Materiais (PPGEM), Universidade Tecnológica Federal do Paraná (UTFPR), Curitiba, Brasil

出　　处：《Materials Sciences and Applications》2021年第7期330-344,共15页材料科学与应用期刊（英文）

摘　　要：The mechanical behavior and wear of the different hardened phases with bore-induced changes in AISI 4340 and AISI D2 steels were investigated. The hardness and modulus of elasticity were measured by nanoindentation and the values obtained for the layers in AISI D2 steel were 18 GPa and 325 GPa in the Fe₂B boride phase, and 20 GPa and 360 GPa in the FeB boride phase, respectively. The AISI 4340 steel presented mainly the Fe₂B phase. It was then possible to analyze the coefficient of friction obtained in the Fe₂B phase of the steel AISI 4340 presented a range of 0.04 to 0.06. The AISI D2 steel presents two different phases in the boride layer being the coefficient of friction higher for the test in the FeB phase than for Fe₂B, and the values vary from 0.065 to 0.075. These parameters were obtained with micro-wear tests. No adhesion failures were observed after the sliding tests in the interface of the two different boride layers. Cracks in the FeB phase after the sliding test were much more frequent.The mechanical behavior and wear of the different hardened phases with bore-induced changes in AISI 4340 and AISI D2 steels were investigated. The hardness and modulus of elasticity were measured by nanoindentation and the values obtained for the layers in AISI D2 steel were 18 GPa and 325 GPa in the Fe₂B boride phase, and 20 GPa and 360 GPa in the FeB boride phase, respectively. The AISI 4340 steel presented mainly the Fe₂B phase. It was then possible to analyze the coefficient of friction obtained in the Fe₂B phase of the steel AISI 4340 presented a range of 0.04 to 0.06. The AISI D2 steel presents two different phases in the boride layer being the coefficient of friction higher for the test in the FeB phase than for Fe₂B, and the values vary from 0.065 to 0.075. These parameters were obtained with micro-wear tests. No adhesion failures were observed after the sliding tests in the interface of the two different boride layers. Cracks in the FeB phase after the sliding test were much more frequent.

关 键 词：Iron Boride Micro-Wear Test Mechanical Properties BORIDING 

分 类 号：TG1[金属学及工艺—金属学]